// 定義:使多個(gè)對(duì)象都有機(jī)會(huì)處理請(qǐng)求，從而避免請(qǐng)求的發(fā)送者 // 和接收者之間的耦合關(guān)系 // // 模式舉例:員工要求加薪，500以內(nèi)項(xiàng)目經(jīng)理直接批準(zhǔn)，500-1000 // 技術(shù)總監(jiān)批準(zhǔn)，1000以上得找總經(jīng)理批準(zhǔn),都是向項(xiàng)目經(jīng)理 // 提出加薪，最終是誰(shuí)批準(zhǔn)要看金額 // // 模式特點(diǎn): // //#include<iostream> #include<string> using namespace std;class Manager { public:Manager(string name,Manager * manager){m_name = name;m_manager = manager;}virtual void dealRequest(string name,int count)=0;protected:string m_name; //自己名字Manager * m_manager; //頂頭上司 };//項(xiàng)目經(jīng)理 class ProjectManager : public Manager { public:ProjectManager(string name,Manager * manager):Manager(name,manager){}virtual void dealRequest(string name,int count){if(count < 500){cout<<m_name<<" 批準(zhǔn) "<<name<<" 漲薪"<<count<<endl;}else{m_manager->dealRequest(name,count);}} };//總監(jiān) class Majordomo : public Manager { public:Majordomo(string name,Manager * manager):Manager(name,manager){}virtual void dealRequest(string name,int count){if(count < 1000){cout<<m_name<<" 批準(zhǔn) "<<name<<" 漲薪"<<count<<endl;}else{m_manager->dealRequest(name,count);}} };//總經(jīng)理 class GeneralManager : public Manager { public:GeneralManager(string name,Manager * manager):Manager(name,manager){}virtual void dealRequest(string name,int count){if(count >= 1000){cout<<m_name<<" 批準(zhǔn) "<<name<<" 漲薪"<<count<<endl;}else{m_manager->dealRequest(name,count);}} };int main() {Manager * generalManager = new GeneralManager("總經(jīng)理",NULL);Manager * majordomo = new Majordomo("技術(shù)總監(jiān)",generalManager);Manager * projectManager = new ProjectManager("項(xiàng)目經(jīng)理",majordomo);projectManager->dealRequest("小明",400);projectManager->dealRequest("小麗",800);projectManager->dealRequest("老王",1100);return 0; }

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